WatcherSpec.js

'use strict'; var FilesizeWatcher = require('./FilesizeWatcher'); var exec = require('child_process').exec; describe('FilesizeWatcher', function() { var watcher; afterEach(function() { watcher.stop(); }); it('should fire a "grew" event when the file grew in size', function(done) { var path = '/var/tmp/filesizewatcher.test'; exec('rm -f ' + path + ' ; touch ' + path, function() { watcher = new FilesizeWatcher(path); watcher.on('grew', function(gain) { expect(gain).toBe(5); done(); }); exec('echo "test" > ' + path, function() {}); }); }); it('should fire a "shrank" event when the file grew in size', function(done) { var path = '/var/tmp/filesizewatcher.test'; exec('rm -f ' + path + ' ; echo "test" > ' + path, function() { watcher = new FilesizeWatcher(path); watcher.on('shrank', function(loss) { expect(loss).toBe(3); done(); }); exec('echo "a" > ' + path, function() {}); }); }); it('should fire "error" if path does not start with a slash', function(done) { var path = 'var/tmp/filesizewatcher.test'; watcher = new FilesizeWatcher(path); watcher.on('error', function(err) { expect(err).toBe('Path does not start with a slash'); done(); }); }); });